1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812e8c9eb6c2aaddb28a897a9970b075bf89338b2429833720be519a0b1abac1. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/188d5562-48c1-41ba-ad62-cbceb476c63c.json and https://artists.proofprofile.net/proofs/artist/188d5562-48c1-41ba-ad62-cbceb476c63c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc22db42534c254aaabd91a8c0355be25364dce29c6f584ce4b198846006d1fe9. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:42:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABI1203387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe16f574dc9d52b80a9ec5bc6baadb9f84ca4cf2e8a9e4246620a6b75b3e7cb. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABI1203388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b2336c50c133ad0fbc8c20def4ae40537292b9b8a4ffebfbb0ea11cfd50133. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABI1203391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04615d31dc8bdefffbaab64c27a86a4d3eb18e7f4ae886ca864fe40e46cb4855. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABI1203393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9327cfe3e37923067e92d2415ab1a48c9ac63edf84b4e62712561318194d160. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABI1203395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fdad36a40c63352ac5eb7f195731c5a8c2ae0fcb36e0af6fbbfd088aeef3f65. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABX1468020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8e7fc5ea18e0463e47ca0ed3647dc20bc04785a2155ffdef4d6d95e1039de8. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABX1468024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b28b5a15bd34454286f9a8d0ec2bdb5c8619c5897c0df67cc3cedd56f3c78a. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABX1468027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87511f37715c2936db1155b602e461fb20dee20dc61140a0abbc0f3bafc4cd18. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABX1468034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d5305e4d0ff99ffbd6c6a44592a884dfcc3c8d83e0ae68889f0801cfc49afef. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T03:56:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABX1468035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5668dbc520477b469fa84f5f821e45e5da4704d2c15bd5a9e0b4a66f264844. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACM1624478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a47a7c8b8044debb5179a8c35380e4ad72d3544aa6490bf0b2148c0faac948. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADX1874115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ade6258fc2dfc212b480a569aea9225ff38d285940d81bba469a9a8f9dc41d1. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T03:56:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEM1921744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba76fa24e561d8c3a5a4afc263cd96d230905d2c54ebfa0e389eaeb342fb4e5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM72110989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d95bc9e23ac9a12743a0ab2a617c91f7430fcf950a6cc4774e84f8f0793aec. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM72113415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf093a5005bef6a99d2e2bcc2f0fea8f9945bd16c3ec01da720a98ee2533267ac. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM72113417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dfa3f031362272967b8e584bea10535eefb020cee9c6bc21ac55a70b3c31d39. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM72216301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a53a51d5f51a174bc2781120ada8b0025ea1386ad76b4f6aa9bd922ae152a47. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM72218467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598a93b850117504f019184878715a320982c8fe8c56522d3b0806d6230d8d8b. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM72302498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95263622ef0867f61945d8a440d62a68070dcefa38bd6427f903a2c659dc9a99. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM72305874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2443b09ef0cf1c4fa865a5bcf3b315faf68cb8846f5aef2d5be892e9897d4af4. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM72303342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc916b169f44eb77ee4719f4b5cbe2c5ce2a907f6188f8a60abcae93d4a9c4bfd. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM72303339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a53a51d5f51a174bc2781120ada8b0025ea1386ad76b4f6aa9bd922ae152a47. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM72218467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb675db5013504d7f3e176706f21e118d2d74b53d53617e0a706b1fd7dd3362. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:32:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM72309839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064750bf4aff8d5ed375068628a48a48c20400f8c620c727304487ecd06ce80a. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM72303335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2443b09ef0cf1c4fa865a5bcf3b315faf68cb8846f5aef2d5be892e9897d4af4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM72303342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590d249d81da8a19893bd95f5dc05506a4a8afd2c42870d746fe2b141ea374c4. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM72311225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455d2e4e1a6f041a368b4e5614b6dcaabffc8dd3983d68d44df626ee7d6364e8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMRSZ2202738.